Antagonist, Partial Agonist, and Full Agonist Imidazo[1,5-a]quinoxaline Amides and Carbamates Acting through the GABAA/Benzodiazepine Receptor
作者:Ruth E. TenBrink、Wha B. Im、Vimala H. Sethy、Andrew H. Tang、Don B. Carter
DOI:10.1021/jm00032a008
日期:1994.3
carbamates, represent a newseries of compounds which bind with high affinity to the GABAA/benzodiazepine receptor. These compounds exhibit a wide range of intrinsic efficacies as measured by [35S]TBPS binding ratios. The synthesis of 1a begins with the addition of DL-glutamic acid to 1-fluoro-2-nitrobenzene, followed by reduction of the nitro group and subsequent ring closure to form 3-(carbethoxymethyl)-1
Iron- or Zinc-Mediated Synthetic Approach to Enantiopure Dihydroquinoxalinones
作者:Dazhi Li、Thierry Ollevier
DOI:10.1002/ejoc.201801639
日期:2019.2.14
A general and efficient synthesis of dihydroquinoxalinones has been developed. The reductive cyclization of N‐(o‐nitroaryl)amino esters was performed by using iron and zinc metal under mild conditions in a water/ethyl acetate mixture. The final products were obtained in moderate to high yields and high enantiomeric purity.
Piperazine Amide Linker for Cyclative Cleavage from Solid Support: Traceless Synthesis of Dihydroquinoxalin-2-ones
作者:Cleopatra Neagoie、Viktor Krchňák
DOI:10.1021/co300023b
日期:2012.7.9
was reduced, and acyclic precursors, in contrast to traditional ester-type linkage, remained attached to the resin. Target dihydroquinoxalinones were obtained either by acid- or microwave-mediated cyclative cleavage. The synthesis provided crude compounds of high purity and enabled the preparation of stable immobilized linear intermediates. The linker is suitable for combinatorial synthesis of compound
The invention discloses imidazo[1,5-a]quinoxalines (I) ##STR1## which do not contain an endocyclic carbonyl group that are useful as anxiolytic and sedative/hypnotic agents.
The invention discloses imidazo[1,5-a]quinoxalines (I) ##STR1## which do not contain an endocyclic carbonyl group that are useful as anxiolytic and sedative/hypnotic agents.